doors do not unlock even if the request switch is pressed

1. Doors do not unlock even if the request switch is pressed diagnostics

Note

Unlocking of the doors may not be possible when the door is pulled immediately after pressing the request switch.
Even when the electronic key is within the operating range (within approximately 80 cm of each door handle), unlocking of the doors may not be possible if the electronic key is too low to the ground or too high in the air.
Unlocking of the doors may not be possible if the electronic key is too close to the door or window.
Unlocking of the doors may not be possible if there is a facility nearby that is emitting strong radio waves.
Unlocking of the doors may not be possible if the electronic key is carried together with communication devices such as mobile phones or other wireless communication devices, or laptop computers.
Unlocking of the doors may not be possible if the electronic key is touching or covered by other metals.

1. Pre-check and visual inspection

1) Battery inspection

Check that the battery voltage is normal. If the battery voltage is not normal, charge or replace the battery.

2) Fuse inspection

Check that the fuses are normal. If there are any malfunctions such as a blowout in fuses, inspect and repair the cause of the blowout before replacing the fuses.

3) Ground inspection

Check that the ground point is normal. Repair and clean the ground point if improperly installed or significantly dirty.

4) BCM inspection

Perform the body control system inspection. Observe the DTC with a scan tool, and go to the applicable DTC diagnosis if a DTC is set.

5) Inspection of harness and connector

Check that the harnesses and connectors are normal. Inspect for poor connections at the connectors, worn or bent harnesses, or short circuits to other circuits in the wire inside the harness.

6) Electronic equipment inspection

Check for any interference from aftermarket electronic components such as wireless devices or lights. Turn OFF or remove any aftermarket electronic components to ensure that there is no influence on inspections or operations.

2. Components inspection

1) Wireless Access Module inspection

Perform the Wireless Access Module (Hi-version [Passive entry start system]) inspection. Observe the DTC with a scan tool, and go to the applicable DTC diagnosis if a DTC is set.

2) Request switch inspection

Check the request switch for damage. Replace if an abnormal condition is found.

3) External antenna inspection

Check the external antenna for damage. Replace if an abnormal condition is found.

4) Electronic key remaining battery level inspection

Check whether the remaining battery level of the electronic key decreases. Replace the battery if the remaining battery level decreases.

5) Electronic key inspection

Check the electronic key for damage. Replace if an abnormal condition is found.

3. Circuit inspection

Inspect the following circuits for an open circuit, high resistance, a short to the power supply circuit, or a short to the ground circuit. If a malfunction is found in the circuit, repair or replace the applicable circuit.

Between the Wireless Access Module (pins 22 and 24 of B15) and each outside handle (pin 4 of D14 and pin 4 of D15)
Between the Wireless Access Module (pins 1 and 5 of B15) and each outside handle (pin 5 of D14 and pin 5 of D15)
Between the Wireless Access Module (pins 21 and 25 of B15) and each outside handle (pin 1 of D14 and pin 1 of D15)
Between each outside handle (pin 8 of D14 and pin 8 of D15) and the body ground
Between the Wireless Access Module (pins 19 and 20 of B15) and the BCM (pins 4 and 3 of B18)